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A288384
a(n) is the n-th term of the leading column of the right triangle in A274650 minus n.
4
0, 0, 1, -1, 1, -1, 0, 1, -1, 2, -1, -1, 0, 0, 1, -1, 0, 1, -1, 0, 0, 1, -1, 0, 1, -1, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 1, -1, 1, -1, 0, 2, -1, -1, 0, 0, 0, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 1, -1, 1, -1, 1, 1, -2, 0, 1, -1, 1, 1, -2, 0, 0, 1, -1, 0, 0, 0, 1, -1, 2, 0, -2, 0, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 0, 1, -1, 0, 0, 1, -1, 0, 1
OFFSET
0,10
COMMENTS
It appears that this sequence has infinitely many negative terms, infinitely many zeros and infinitely many positive terms.
FORMULA
a(n) = A274650(n,0) - n = A286294(n) - n, n >= 0.
MATHEMATICA
(* function a286294[] is defined in A286294 using A274651 *)
a288384[n_] := a286294[n] - Range[0, n]
a288384[104] (* data *) (* Hartmut F. W. Hoft, Jun 13 2017 *)
CROSSREFS
Inspired by A286294.
Partial sums give A288424.
Sequence in context: A141664 A056979 A087812 * A113045 A309365 A204179
KEYWORD
sign
AUTHOR
Omar E. Pol, Jun 08 2017
EXTENSIONS
Signs reversed at the suggestion of Hartmut F. W. Hoft and edited by Omar E. Pol, Jun 13 2017
STATUS
approved